Practice ball



FIG. 1 is a perspective view of the practice ball showing our new design;

FIG. 2 is a side view thereof;

FIG. 3 is a top view thereof; and,

FIG. 4 is a bottom view thereof.

The broken lines are included for the purpose of illustrating the portions of the practice ball that form no part of the claimed design. 

CLAIM We claim the ornamental design for a practice ball, as shown and described. 